System and method for performing blending using an over sampling buffer
US6144365A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1998 |
| Grant date | Nov 7, 2000 |
| Priority date | — |
| Expiry date | Apr 15, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides an alpha blending unit that is able to perform alpha blending on sub-samples of a pixel in an efficient manner. The alpha blending unit preferably comprises a plurality of registers for storing a source color, a blending value, and a plurality of destination sub-sample values, multipliers, adders, an accumulator and a divider. The alpha blending unit advantageously sums the destination sub-sample values and then divides them by the number of sub-samples to generate a combined destination color value. This combined destination color value along with the source color and a blending value are then provided to the multipliers, and adders to generate a new destination color value for the pixel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.